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M4T28-BR12SH1 Datasheet(PDF) 22 Page - STMicroelectronics

Part # M4T28-BR12SH1
Description  3.3V, 256Kbit (32Kbit x 8) TIMEKEEPER짰 SRAM
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M4T28-BR12SH1 Datasheet(HTML) 22 Page - STMicroelectronics

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Package mechanical data
M48T35AV
22/28
6
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 14.
PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, package outline
Note:
Drawing is not to scale.
Table 12.
PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, pack. mech. data
PCDIP
A2
A1
A
L
B1
B
e1
D
E
N
1
C
eA
e3
Symb
mm
inches
Typ
Min
Max
Typ
Min
Max
A
8.89
9.65
0.350
0.380
A1
0.38
0.76
0.015
0.030
A2
8.38
8.89
0.330
0.350
B
0.38
0.53
0.015
0.021
B1
1.14
1.78
0.045
0.070
C
0.20
0.31
0.008
0.012
D
39.37
39.88
1.550
1.570
E
17.83
18.34
0.702
0.722
e1
2.29
2.79
0.090
0.110
e3
29.72
36.32
1.170
1.430
eA
15.24
16.00
0.600
0.630
L
3.05
3.81
0.120
0.150
N28
28


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